Adaptive subband Notch Filter for RFI cancellation in low interference to signal ratio

Author

Elasmi-Ksibi, Rim ; Cherif, Sofiane ; Besbes, Hichem ; Jaidane, Meriem

Author_Institution

Unite de Rech. TECHTRA, SUPCOM, Tunisia

fYear

2006

fDate

4-8 Sept. 2006

Firstpage

1

Lastpage

4

Abstract

In this paper, an adaptive-subband-based Radio Frequency Interference (RFI) cancellation method for VDSL systems is developed. The use of subband adaptive IIR notch filter with a specific developed excision algorithm offers a solution in low Interference to Signal Ratio (ISR) environment. The division of a fullband problem into several subbands improves the tracking ability of the Fullband Adaptive Notch Filter (FANF) in low ISR, since the noise variance is reduced in each subband and offers faster convergence speed, due to decimation. In this paper, we compare the performances of the subband method with the classical fullband method using the normalized-stochastic-algorithm-based IIR Adaptive Notch Filter (ANF).

Keywords

IIR filters; adaptive filters; digital subscriber lines; interference suppression; notch filters; radiofrequency interference; tracking filters; ANF; FANF tracking; ISR environment; RFI cancellation; VDSL system; adaptive subband based radio frequency interference cancellation; interference to signal ratio; noise variance reduced; normalized-stochastic-algorithm-based llR adaptive notch filter; subband adaptive llR notch filter; very high speed digital subscriber line; Abstracts; Adaptation models; Adaptive filters; Frequency estimation; Interference; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2006 14th European

Conference_Location

Florence

ISSN

2219-5491

Type

conf

Filename

7071729